Rockets center Yao Ming said his rehab remains on schedule, and X-rays taken Wednesday "showed good news."

He hasn't worn the protective boot for a few months and is able to do light jogging and weight lifting.

The next doctor's visit is planned for later this summer, although Yao said there was not yet an exact date.

"We'll know more in August or September," he said.

Based on his past injury history, Yao was cautious not to put any timetable on a possible return.

"All I can do right now is what I'm supposed to do everyday," he said. "You never know what happens tomorrow."